DSH series Desuperheater control valve reduces the
superheated steam temperature by injecting cooling
water in to it. Due to heat transfer principle the water
absorb sufficient heat for vaporization to maintain
temperature close to that of saturation.
The operation is quite simple , The spray water quantity is controlled with an external control valve. Spray nozzle which received the feedback / signals from controller and downstream temperature sensor. Temperature reduction occurs due to disperse of the minute water particle and atomizing steam counter to the flow of superheated steam , enabling the fine mist to be easily evaporated.
Mechanical atomizing type Desuperheaters are generally used to lowering the temperature of superheated steam to the required set point by injecting atomized water in to the superheated steam flow with spray Nozzle.
|Steam Line Size||25 mm to 400 mm NB|
|Connection Size||Steam Side Mounting Flange - 80 NB|
|Water Side Flange||25 mm , 40 mm NB|
|Pressure Rating||150# to 2500#|
|Body MOC||Carbon Steel / Alloy steel / Stainless Steel|
|Nozzle MOC||SS 316 (Stellited optional)|
|Actuator||Pneumatic / Electrical|
|Rangeability||40 : 1|